Peb txhua tus paub tias nws tsis yog ib qho yooj yim kom xaiv txoj kev tiv thaiv kom zoo. Qhov ntsuas ntawm kev tiv thaiv kev tiv thaiv tsis zoo li lub txiaj ntsim ntawm lub smartphone uas yog cuab kev thiab yooj yim to taub rau cov neeg feem coob. Muaj ntau yam tsis to taub thaum xaiv ib qho SPD.

Ib qho ntawm kev tsis sib to taub yog tias qhov muaj peev xwm loj dua tam sim no muaj peev xwm (ntsuas hauv kA ib ntu), SPD zoo dua. Tab sis ua ntej tshaj plaws, cia peb tham dab tsi peb txhais li cas los ntawm kev muaj peev xwm tam sim no. Tshaj tawm ib ntu tam sim no yog qhov ntau ntawm cov txiaj ntsig tam sim no uas tuaj yeem xa mus (los ntawm txhua ntu ntawm lub cuab yeej) yam tsis muaj qhov tsis ua tiav thiab ua raws IEE tus qauv 8 × 20 microsecond kuaj waveform. Piv txwv li, thaum peb tham txog 100kA SPD lossis 200kA SPD. Peb tab tom xa mus rau nws qhov tam sim no muaj peev xwm loj.

Tshaj tawm lub peev txheej tam sim no yog ib qho tseem ceeb tshaj plaws rau SPD. Nws muaj tus qauv kom muaj ntau qhov kev tiv thaiv kev tiv thaiv. Thiab cov tuam txhab SPD yuav tsum tau sau cov qib siab ntawm lawv cov SPD. Thiab rau cov qhua tuaj noj mov, lawv kuj to taub tias SPD tau muab tso rau hauv qhov kev pab cuam nkag yuav tsum muaj siab tshaj tam sim no muaj peev xwm sib piv nrog SPD ntsia rau ceg ntoo.

Yog li ntawm no los qhov teeb meem, ntau tus neeg ntseeg tias ib qho 200kA SPD zoo dua li 100kA SPD. Dab tsi yog qhov tsis ncaj ncees nrog qhov kev xav no?

Ua ntej, nws tsis xav txog tus nqi. Yog tias 200kA SPD tus nqi zoo ib yam li 100kA SPD thiab lwm yam tsis xws li txhua yam, koj yuav tsum yog yuav 200kA SPD. Tsis tau qhov tseeb tiag, 200kA SPD tus nqi siab dua 100kA qauv yog li peb yuav tsum xam seb qhov kev tiv thaiv ntxiv nws puas tsim nyog tau txais cov nyiaj ntxiv.

Qhov ob, 200kA SPD tsis tas yuav muaj qhov ntsuas kev tiv thaiv qis dua (VPR) dua li 100kA SPD. VPR yog qhov seem hluav taws xob uas yuav ua rau cov khoom siv hluav taws xob nqes.

Yog li koj hais tias qis qis dua tam sim no muaj peev xwm SPD txaus thiab SPD nrog cov kA loj dua tsuas yog khib nyiab nyiaj xwb.

Tsis muaj. Koj xav tau pes tsawg leej kA yog nyob ntawm daim ntawv thov. Txawm hais tias kev tiv thaiv kev tiv thaiv nyob hauv chaw siab, nruab nrab lossis tsawg qhov chaw raug rau qhov loj ntawm SPD koj xaiv.

IEEE C62.41.2 qhia txog cov kev tsim tawm hauv lub tsev laus.

  • Qeb C: Kev nkag mus ua haujlwm, kev loj dua puag ncig: 10kV, 10kA surge.
  • Qeb B: Nqaim, ntau dua los yog sib npaug 30 ntawm qeb C, tsis tshua muaj kev kub ntxhov: 6kV, 3kA surge.
  • Qeb A: Ntxiv mus qis, ntau dua los yog sib npaug ntawm 60 ft ntawm qeb C, tsawg ib puag ncig: 6kV, 0.5kA surge.

Yog li ntawd, yog tias koj muaj cov khoom muaj nqis nyob hauv cheeb tsam chaw siab, nws yog qhov zoo dua los xaiv SPD nrog lub zog loj tshaj tam sim no vim hais tias kev cia siab ntawm qhov chaw no ntau dua. Yog li ntawd, kuv tuaj yeem xaiv qis dua qA SPD tom qhov chaw raug qis tshaj. Technically, koj ua tau. Tab sis qhov teeb meem yog tias tsawg tshaj plaws ntawm kA SPD yuav sai sai kawg rau qhov kawg ntawm lub neej thiab ces koj yuav tsum tau yuav khoom thiab rov nruab ib lub tshiab. Tus nqi txij nkawm yuav siab tshaj SPD nws tus kheej.

Yog li nws coj tau lwm qhov laj thawj los siv kA SPD ntau dua. Ib qho loj hauv kA SPD muaj ib lub neej ntev thiab yog li tseg lub sijhawm thiab tus nqi rau kev saib xyuas. Piv txwv, qee qhov chaw nres tsheb nyob hauv thaj chaw deb sab nraud los sis hauv roob sab saum toj. SPD tiv thaiv lub chaw yuav tsum muaj lub neej ntev ntev, zoo dua yog kev saib xyuas mus tas dawb huv.

Ntsiab lus

Nyob rau hauv tsab xov xwm no, peb sib tham txog qhov teeb meem ntawm kev cia siab tam sim no muaj peev xwm thaum xaiv SPD. Kev loj hlob siab tshaj tam sim no SPD tsis muaj qhov ntsuas kev tiv thaiv zoo dua (VPR) thiab qee zaus tsis tsim nyog thaum koj siv tus nqi ntxiv rau hauv koj tus account.

Tsis tau yog tias koj cov khoom ntiag tug nyob hauv thaj chaw muaj kev raug mob lossis kev ua haujlwm tsis yooj yim lossis pheej yig rau kev coj ua, ces kA SPD yog qhov zoo tshaj.